Furnace-door.



G; ONEILL. FURNACE noon. APPLICATION F ILED 00122, 1914 Patented Mar. 16, 1915.

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JA IVENTJIT E OWE/LL.

G. ONEILL.

FURNACE DOOR.

APPLIOATIOH FILED 001.22, 1914.

1,1 31,945. Patented Mar. 16, 1915.

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UNITED STATES PATENT OFFICE.

GEORGE OlYl'IEl-ILL, OF MON CTON, NEW RUNswIcx,

Specification of Letters Patent.

Patented M... 16, 1915.

\ Application filed October 22, 1914. Serial- No. 868,061.

To all whom it may concern Be it known that I, GEORGE ONEILL, a subject of the King of Great Britain, and resident of Moncton, in the Province of New Brunswick, Dominion of Canada, have invented certain new and useful Improvements in F urnace-Doors, of which the following is'a specification.

This invention relates to improvements in furnace doors of the type adapted to admit air to the interior of the fire-box, to promote combustion and eliminate smoke and the objects of the invention are to provide means insuring proper heating of air before it is discharged into the fire box, and further to generally simplify the construction of the door, and it consists essentially of the improved construction of door particularly de-- scribed in the following specification and accompanying drawings forming part of the same.

In the drawings, Figure 1 is a sectional perspective view of the improved door mounted on a boiler. Fig. 2 is a front'elevation of the improved door. Fig. 3 is a back elevation of the same. Fig. 4 is a perspective view of the inner lining member and baflie plates thereon. Fig. 5 is a perspective view of an auxiliary series of bafile plates. Fig. 6 is a longitudinal section of the improved door.

Like characters of reference refer to like parts in all the figures.

Referring to the drawings, A represents a boiler and B the improved door mounted thereon, the said boiler being of any usual type and not forming part of the present invention requires no further description.

The door B consists of the front plate C and the hollow lining member D, the former having suitable lugs 2 for hanging purposes and a central latching member 3. To provide for the passage of air through the plate C, a plurality of orifices 4 are provided extending around the outer periphery, and in the embodiment illustrated a second set of orifices 5 are shown, the object of which will be made clear hereafter.

The inner lining member D comprises a radially corrugated back plate 7 having an orifice 8 therethrough around the periphery of which a flange extends with which the conduit 9 engages, the sides of the said back plate being beveled at -10 and provided with lugs 11 having threaded orifices 12 therethrough designed to register with the orifices 5 in the front plate. Located between the beveled sides 10 and the conduit 9 is 0.-

concentric bafile plate 13 integral with the corrugated back plate 7, the edges ofsuch baffle plate remote from the said backplate being provided with a plurality of recesses 14 designed to form air passages in a manner to be hereafter described. Cooperating with the hollow lining member D is a second .set of bafiles E comprising a front plate 15 having integral concentric flanges 16 and 17, vthe former of which is designed to ffic- I tionally engage with the l hollow lining 7 member, sii flanges being provided on the edge remote from the-plate 15 with recesses 18 adapted to form air passages. I i In assemblin the door A the baflles E are inserted in the ollow lining member D, the flange l6 engaging with the lugs 11 and the flange 17 interposed between the flange 13 and conduit 9, thereby staggering the said baflle plates. In this position it will be seen that the edges of the flanges 13, 16 and 11' engage with the inner faces of the plate 15 and the corrugated back plate 7, the curved recesses 14 and 18 providing the necessary passages for the air. The front plate B Y is now placed in position with the orifices 5 11 on the said It will of course be understood that the number of bafiie plates may be increased in the inner lining, or the auxiliary bafiles E,

as is found convenient or desirable;

As many changes could be made in the above construction and many apparently 1 widely different embodiments of my invention within the scope of the claim, constructed without departing from the spirit or scope thereof, it is intended that all matter contained, in the accompanying speci 1 10 fication and drawings shall be interpreted as illustrative and not in a limiting sense.

L5; elami my invention is:

mace (we: ai ing a hollow lining" provided with a central opening member being radially corrugated inc-ml iiieyopeaing, concentric bafile plates eeid and auxiliagy batlie plates fi ictioimilyfetain'ed in saidfliningand stag;

gel-ed relatively to the first.

2; Ai-fiirnaoe door having a hollow lining membef-provided with-acentral opening, oonceilirio loaiile plat-es in said lining, lugs in one lining, and auxiliary concenti io filoglows frietionally supported in said iiiiing' yooid lugs, and staggered relatively 5 o thefirssi 3. A ace door having a hollow lining member provided with a central opening, oorgcenizxiebaifie plates insaid lining having messesiii the edges, lugson said lining ember, auxiliary. bafile plat-es frictionally weziiiiled said lining and. having recesses $45; sxioii bafiie plates being staggered relaiively to the first i. A. fix ..-oe door having a iiolio'w lining said member being radially corrugated around the said opening, a flange around the inner periphery of the said opening, a-

oonduit engaging with said flange forming a. discharge end, and concentric bafile plates in the said door.

5. A furnace door having a front plate provided with a plurality of air inlet orifices around the outer periphery, a hollow lining member provided with a central opening, said member being radially corrugai-ed around the said opening, a concentrio oafiie glam on said lining, auxiliary oafie plates frictionally sup orted in said lining and staggered relatively to the first said baille.

In witness whereof I have hereunto set my hand in the presence oftwo itnesses.

GEORGE ONEILL.

Witdesses: r

HoWARo hurry Goose, FRANCIS PATRICK. MUREHY. 

